this movie reminds me one thing that became a lesson for a lot of people...the things that we did NOT do.

after high school I took a 3 years foreign language course.
at the second year there were a classmate who asked me for tutoring since she was working and taking the course at the same period, she was somehow eccentric; attractive, cheerful, above average kirei but none had the gut to approach her personally for 恋愛, she was somehow out of our league.

2 years after our graduation I was already an employee in a local company and had a girlfriend.
one day she called me through my home number.
at that time I didn't aware that none of my friends/classmates ever contacted me via home line.
we talked quite long and she gave me birthday wishes I didn't even get from my own girlfriend.

10 years later, we have classmates meet/party.
after that I once phone her and tell her 会いたい

a few months after the meet she got hospitalized after a trip to middle east, me and my classmates visited her at the hospital.
I had the chance to visit her alone afterwork at non visitors hour (the hospital's security personels seems to see me as a patient family member, they didn't even stop or questioned me as they did to other visitors entering the hospital's inpatient pavilion/I had konbini bag on my hand)

she recovered and got home, but in a few months she was rehospitalized and I was only able to convey condolences to her family at her funeral.